Published on 2020-03-30.

* refactor(web): namespacing DOM-focused management (#2891)
* refactor(web/engine): starts DOM pre-processor (#2892)
* refactor(web): starts OSK preprocessor (#2893)
* refactor(web): headless device representation (#2894)
* refactor(web): cleanup for Processor.processKeyEvent (#2899)
* chore(common): Cleanup unused folders and update README (#2916)

Minor fixes and performance improvements